Base structure.
Flush the stream.
Returns true (1) if this writer performs work like accessing the file system which may block. Used as a hint for determining the thread to access the writer from.
Seek to the specified offset position. |whence| may be any one of SEEK_CUR, SEEK_END or SEEK_SET. Returns zero on success and non-zero on failure.
Return the current offset position.
Write raw binary data.
Structure used to write data to a stream. The functions of this structure may be called on any thread.